Ū-nau', n.

n. [Brazilian.] (Zoöl.) An edentate mammal, (Cholæpus [or Bradypus] didactylus), or two-toed sloth. This animal, which is larger by one half than a cat, is of a uniform grayish-brown color, sometimes with a reddish tint. It is found only in the hot parts of South America. Baird.